Mercury Optimax Oil Reserve Alarm

DonK · 09-03-2008, 05:04 PM

I have now experienced 2/2 or 100% failure rate of the sensor that monitors the oil reservoir level on the engine.

Apparently the float inside the engine mounted tank fails, and starts to send an false reading to the smartcraft computer, which will eventually put the motor into "guardian" (low rev.) mode when it reaches 3% oil remaining...even though the oil system is full and operating correctly.

The mech. I spoke to told me a short term work around (especially if your offshore and can determine that the sensor failed) is to jumper the sensor leads...(I could have used that info on labor day).

I am curious how many other Optimax owners have experienced the false oil level alarm?

canes · 09-04-2008, 01:36 PM

same prob on the pair of 03 250 saltwater series .

reelquick 28 · 09-07-2008, 10:33 AM

Same here i have 07' 225 opti's and its happened twice already

Lastdrop · 09-28-2008, 05:55 PM

I have a 225 Optimax that suddenly started having the same problem. Two things you might check:

There may be air in the engine oil tank that could cause that sensor error. Try loosening the fill cap on the engine oil tank. Start the engine and run until the oil starts to run out of the tank. Retighten cap

Have you checked the oil filter lately?

If none of that works, I'd be interested to know what other postings you've gotten .

DonK · 09-28-2008, 07:52 PM

the oil res was definitely full...overflowed as soopn as the cap was opened.

oil filter? where?

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09-03-2008, 05:04 PM	#1 (permalink)
DonK Grander Join Date: Feb 2007 Location: Boca Raton Boat: "the Fish-Tank", 1986 Rybo Runner Best Catch: 395# Broadbill Occupation: Restaurant software engineer, Mis-Boated 6-pack Capt. Posts: 1,026	Mercury Optimax Oil Reserve Alarm I have now experienced 2/2 or 100% failure rate of the sensor that monitors the oil reservoir level on the engine. Apparently the float inside the engine mounted tank fails, and starts to send an false reading to the smartcraft computer, which will eventually put the motor into "guardian" (low rev.) mode when it reaches 3% oil remaining...even though the oil system is full and operating correctly. The mech. I spoke to told me a short term work around (especially if your offshore and can determine that the sensor failed) is to jumper the sensor leads...(I could have used that info on labor day). I am curious how many other Optimax owners have experienced the false oil level alarm? __________________ "thank God they are not as intelligent as we who kill them, although they are more noble...and able." -the old man Gunter glieben glauten globen

09-04-2008, 01:36 PM	#2 (permalink)
canes Lines In Join Date: Dec 2004 Location: Sunrise Boat: golf,fishing,BEER Occupation: Ops Mgr Posts: 34	same prob on the pair of 03 250 saltwater series . __________________ Just keep reeling

09-28-2008, 07:52 PM	#5 (permalink)
DonK Grander Join Date: Feb 2007 Location: Boca Raton Boat: "the Fish-Tank", 1986 Rybo Runner Best Catch: 395# Broadbill Occupation: Restaurant software engineer, Mis-Boated 6-pack Capt. Posts: 1,026	the oil res was definitely full...overflowed as soopn as the cap was opened. oil filter? where? __________________ "thank God they are not as intelligent as we who kill them, although they are more noble...and able." -the old man Gunter glieben glauten globen

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09-07-2008, 10:33 AM	#3 (permalink)
reelquick 28 Lines In Join Date: Oct 2007 Location: deerfield beach Boat: 32' Sea Craft Best Catch: 58lb wahoo and 135lb sword Occupation: Ray Qualmann Marine Posts: 92	Same here i have 07' 225 opti's and its happened twice already

09-28-2008, 05:55 PM	#4 (permalink)
Lastdrop Grunt Join Date: Sep 2008 Location: Stuart, FL Boat: Proline 26 WA Best Catch: 8' Sail Occupation: Semi-retired architect Posts: 1	I have a 225 Optimax that suddenly started having the same problem. Two things you might check: There may be air in the engine oil tank that could cause that sensor error. Try loosening the fill cap on the engine oil tank. Start the engine and run until the oil starts to run out of the tank. Retighten cap Have you checked the oil filter lately? If none of that works, I'd be interested to know what other postings you've gotten .

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